Absorbing and purifying composition



stove, and the exhaust gases thereof passed ABSCRBING- AND PURIFYING COMPOSITION.

1,346,349. No Drawing.

2 '0 all whom it may concern Be it known that I, J OHN CQTATE, a citizen of the United States, residing'at Oakland in the county of Alameda and State of (lalifornia, have invented certain new and useful Improvements in Absorbing and- Purifying Composition, of which the following is a specification.

The present-invention relates .to an absorbent composition, particularly adapted for purifying the gaseous products resulting fromthe combustion of fuel gas or the lighter oils, such for example as kerosene.

It is well known that the exhaust gases from gas or oil flames contain objectionable products, chief among which, are water vapor and carbon dioxid. Small proportions of; other gases, particularly compounds of sulfur, are also frequently present, and give rise to disagreeable odors. And moreover, the water vapor, combining to a certain degree with the carbon dioxid and the sulfurous gases, produces corrosive acidic compounds. These exhaust roducts are not only injurious to health, if present in the air 1n sufficient quantities, butthey also attack and corrode metals, painted surfaces, and organic materials.

injurious and from the exhaust gases of gas and oil 7 The object of the present invention therefore, is to provide a composite material.

which will absorb, wholly or in part, the objectionable constituents flames, and by so doing to rmit the use of such flames, as for examp e in heaters and stoves, in confined spaces, without necessitating the provision of vents 'or flues for carrying off the products of combustion.-

My absorbent composition is intended to be inclosed within a suitable container through which the exhaust gases are passed in such a manner that they come in contact with the absorbent material. For example, a contalner having a supply'of my absorbent composition may be attached to a heating through said container before being .discharged mto the air. :Such a'stove may be used in a closed room, 'without rendering the air thereof unfit for breathing, for a. much longer time than is possible 1 wit out the use of the absorbent composition. It is to he understood that the absorbent composition is to be renewed when absorbing gaseous fumes, and a bin Specification of Letters Patent. P t nt July 13, 192 .tmflieaiuon filed September 21, 1916. Serial No. 121,482.

saturated beyond the point of efiicient absorption.

M composition consists of a mixture of a mineral absorbent, such, for example as lime, preferably air-slaked, a vegetable absorbent suchas charcoal, and a mineral binder and filler, such as freshly burned gypsum. A small quantity of clay, such for example as kaolin may also be included,

as an additional absorbent. These ingredients are preferably mixed in the following approximate gravimetric proportions, although variations in said proportions, within reasonable limits, are permissible without affecting the efficiency of the compos1t1on: lime 16 parts; charcoal, preferably woodcharcoal, 1 part; burned gypsum, 8 arts; and kaolin, 4 parts.

he above ingredients are preferably powdered, and mixed in a drystate. To

the dry mixture is then added approximately seventy-five per cent. (by weight) of water, to form a plastic mass. The

plastic mass thus formed is molded into bodies preferably spherical in form and approximately three-quarters of one inch in diameter, and subsequently dried, by any convenient means, to expel the admixed water. When dry, the balls are hard and porous. Y 1

The'lime in my composition acts as an absorbent of water vapor and carbon dioxid. The kaolin, if used, acts as a mechanical absorbent, and'as a deodorant. The burned gypsum serves as a binder, to hold the other ingredients together in a hard mass, and is of itself sufficiently porous to act as a mechanical absorbent.

The spherical form of my composition, which I consider preferable to the other what I claim as newand desire to protect by Letters Patent is:-..

1. A composition for purifying gaseous products of combustion-comprising a. mineral capable of absorbing moisture and car-- bon dioxid, a vegetable material capable of er. a

2. A composition for purifying gaseous products of combustion comprising a mineral capable of absorbing moisture and carbon dioxid, in combination with charcoal, and a binder.

3. A composition for purifying gaseous products of combustion comprising lime, charcoal, and a binder.

4. A composition for purifying gaseous products of combustion comprising lime,

kaolin, charcoal and a binder.

5. A composition for purifying gaseous products of combustion comprising a mixture of lime, charcoal and burned gypsum.

6. As a composition for purifying gaseous products of combustion, a hard porous -materlal comprising a mixture of lime, char- 9. A composition for purifying gaseouspmductsof combustion, comprising a mixture of 16 parts by weight of lime, one part by weight of wood charcoal, and 8 parts by weight of burned gypsum.

- -10. A composition for purifying gaseous products of combustion, consisting of 16 parts by weight of lime, 4 parts by weight of kaolin, one part by weight of wood charcoal, and 8 parts by Weight of burned gypsum. 1

11. A composition for purifying gaseous" products of combustion comprislng an absorbent capable of retaining moisture, gases,

and the disagreeable odors resulting from combustionof animal and vegetable matter. '12. A composition for purifying gaseous products of combustion comprising a hard porous body of spherical form composed of a mineral capable of absorbing moisture and carbon dioxid, a vegetable material capable of absorbing gaseous fumes, and a binder.

a hard a subscribing witness.

13., A composition for purifying gaseous products of combustion comprising lime, clay, charcoal and a binder.

14. vAs a composition for purifying gaseous products of combustion, a porous ody consisting of a mixture of lime, clay, charcoal, and burned psum.

15. A composition for purifying gaseous products of combustion, consisting of substantially 16 parts of lime, 4 parts of clay, 1 part of charcoal, and 8' parts of burned yp v 16. A process of purifying the products of combustion caused by the burning of liquid or gaseous fuel, consisting of passing said products of combustion in a continuous stream ip their natural "flow prior to their escape to the atmosphere through a porous composition made of a mineral capable of absorbing moisture and carbon dioxid, and a vegetable material capable of absorbing gaseous fumes. g

17 A process of purifying the products of combustion caused by the burning of liquid or gaseous fuel, consisting'of passing said products of combustion in a continous stream in their natural'jflow prior to their escape to the atmosphere through a porous mixture of hydrated lime, potter s cla ,charcoal and abinder, which absorb'an retain the noxious vapors in said products of combustion. V

I8. A process of purifying the products of combustion caused by the burning of liquid or gaseous fuel, consisting of passing the products of combustion in a continuous stream in their natural flow rior to their escape to the atmosphere, in a ighly heated condition through porous composition, consisting of a mixture of twenty parts of hydrated lime, two parts of potters clayj,

nine parts plaster Paris, and one part 0 wood charcoal. 1

In testimony whereof I have signed my name to this specification in the presence of JOHN c. TATE.

Witness:

D. B. RICHARDS. 

